Hand warmer



FIG. 1 is a front view of the hand warmer.

FIG. 2 is a left side view of the claimed design.

FIG. 3 is a right side view of the claimed design.

FIG. 4 is a top view of the claimed design.

FIG. 5 is a bottom view of the claimed design; and,

FIG. 6 is a perspective view of the claimed design. 

CLAIM I claim the ornamental design for a hand warmer, as shown and described. 